{"id":76,"date":"2024-04-04T03:04:49","date_gmt":"2024-04-04T00:04:49","guid":{"rendered":"https:\/\/sisu.ut.ee\/elektroonika\/35-rc-ahel\/"},"modified":"2024-04-04T03:05:53","modified_gmt":"2024-04-04T00:05:53","slug":"35-rc-ahel","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/elektroonika\/35-rc-ahel\/","title":{"rendered":"3.5. RC-ahel"},"content":{"rendered":"<p><span data-mce-mark=\"1\">Korrutist R\u00b7C nimetatakse RC-ahela ajateguriks. Ajategur n\u00e4itab kondensaatori laadumise v\u00f5i t\u00fchjenemise kiirust. Mugav on see, et ajategur s\u00f5ltub nii kondensaatori mahtuvusest kui takisti takistusest. Sobiva ajateguri saamiseks v\u00f5ib muuta \u00fcksk\u00f5ik kumba \u2013 kondensaatorit v\u00f5i takistit. Seep\u00e4rast on palju variante iga n\u00f5utud ajateguri saavutamiseks.<\/span><\/p>\n<p>Videoloengus k\u00e4sitletakse RC-ahela ajategurit, kuidas ajategurit praktiliselt m\u00f5\u00f5ta ja kuidas ajateguri kaudu kondensaatori mahtuvust m\u00e4\u00e4rata.<\/p>\n<p>Praktilise t\u00f6\u00f6 jaoks vajad j\u00e4rgmisi vahendeid:<\/p>\n<ul>\n<li>vooluallikas<\/li>\n<li>makettplaat<\/li>\n<li>multimeeter<\/li>\n<li>kell<\/li>\n<li>takistid<\/li>\n<li>elektrol\u00fc\u00fctkondensaatorid<\/li>\n<\/ul>\n<p><\/p><div class=\"ratio ratio-16x9 mb-3\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--16x9\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>Kolmandate osapoolte sisu n\u00e4gemiseks palun n\u00f5ustu k\u00fcpsistega.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Muuda n\u00f5usolekut<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n<p style=\"text-align: center\"><a href=\"https:\/\/youtu.be\/E2AcP4kqsvc\" target=\"_blank\" rel=\"noopener\">https:\/\/youtu.be\/E2AcP4kqsvc<\/a><\/p>\n<h5><img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"40\" class=\"alignnone wp-image-77\" style=\"margin-left: 10px;margin-right: 10px\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/189\/motle.png\" title=\"motle.png\" alt=\"motle.png\">\u00a0M\u00f5tle kaasa!<\/h5>\n<p>Videos ajal 05:00 \u2013 06:00 m\u00f5\u00f5dame pinget kondensaatoril. Kui suur on maksimaalne ja minimaalne voolutugevus l\u00e4bi takisti?<\/p>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69d2bdc59375a-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69d2bdc59375a-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69d2bdc59375a-collapse\">Vastus<\/button>\n        <\/h2>\n        <div id=\"accordion-69d2bdc59375a-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69d2bdc59375a-heading\">\n            <div class=\"accordion-body\">\n<p style=\"padding-left: 30px\">Voolutugevus l\u00e4bi takisti on k\u00f5ige suurem hetkel, kui kondensaatori pinge on null, e. esimesel hetkel peale l\u00fclitamist. Siis on pingelang takistil v\u00f5rdne vooluallika pingega.<\/p>\n<p style=\"padding-left: 30px\">Voolutugevuse saame Ohmi seadusest: I = U\/R = 6,3V\/47000\u2126 = 0,000134A = 0,13mA.<\/p>\n<p style=\"padding-left: 30px\">Voolutugevus on k\u00f5ige madalam siis, kui kondensaatori pinge on k\u00f5ige k\u00f5rgem: 5,9V.<\/p>\n<p style=\"padding-left: 30px\">Takistile j\u00e4\u00e4b 6,3V-5,9V=0,4V. Voolutugevus on I = U\/R = 0,4V\/47000\u2126 = 0,0000085A = <span style=\"color: #008000\"><strong>8,5\u00b5A<\/strong><\/span>.<\/p>\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n<h5><img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"40\" class=\"alignnone wp-image-77\" style=\"margin-left: 10px;margin-right: 10px\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/189\/motle.png\" title=\"motle.png\" alt=\"motle.png\">\u00a0M\u00f5tle kaasa!<\/h5>\n<p>RC-ahel koosneb kondensaatorist mahtuvusega 120nF ja takistist takistusega 15k\u2126.<\/p>\n<ol>\n<li>Kui suur on ajategur?<\/li>\n<li>Kui suur on vooluallika pinge, kui see RC-ahel laadub 1800\u00b5s jooksul pingeni 12,6V?<\/li>\n<li>Kui vahetada ainult takisti, siis millise takistiga oleks ajategur kaks korda suurem?<\/li>\n<li>Kui vahetada ainult kondensaator, siis millise kondensaatoriga oleks ajategur kaks korda v\u00e4iksem?<\/li>\n<li>Missugune on ajategur, kui teha m\u00f5lemad vahetused?<\/li>\n<\/ol>\n<p><\/p><div class=\"accordion mb-3\">\n        <div class=\"accordion-item accordion-item--white\">\n        <h2 class=\"accordion-header\" id=\"accordion-69d2bdc593761-heading\">\n            <button class=\"accordion-button collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#accordion-69d2bdc593761-collapse\" aria-expanded=\"true\" aria-controls=\"accordion-69d2bdc593761-collapse\">Vastus<\/button>\n        <\/h2>\n        <div id=\"accordion-69d2bdc593761-collapse\" class=\"accordion-collapse collapse\" aria-labelledby=\"accordion-69d2bdc593761-heading\">\n            <div class=\"accordion-body\">\n<ol>\n<li><strong>Kui suur on ajategur?\u00a0<br><\/strong>\u03c4 = R\u00b7C = 0,00000012F \u00b7 15000\u2126 = 0,0018s = <span style=\"color: #008000\"><strong>1,8ms<\/strong><\/span>.<\/li>\n<li><strong>Kui suur on vooluallika pinge, kui see RC-ahel laadub 1800\u00b5s jooksul pingeni 12,6V?\u00a0<br><\/strong>Kui 0,63 \u00b7 U = 12,6V, siis U = 12,6V\/0,63 = <strong><span style=\"color: #008000\">20V<\/span><\/strong>.<\/li>\n<li><strong>Kui vahetada ainult takisti, siis millise takistiga oleks ajategur kaks korda suurem?\u00a0<br><\/strong>2 korda suurem takistus, 30k\u2126.<\/li>\n<li><strong>Kui vahetada ainult kondensaator, siis millise kondensaatoriga oleks ajategur kaks korda v\u00e4iksem?\u00a0<br><\/strong>2 korda v\u00e4iksem mahtuvus, <strong><span style=\"color: #008000\">60nF<\/span><\/strong>.<\/li>\n<li><strong>Missugune on ajategur, kui teha m\u00f5lemad vahetused?\u00a0<br><\/strong>J\u00e4\u00e4b samaks: \u03c4 = R\u00b7C = 0,00000006F \u00b7 30000\u2126 = 0,0018s = <strong><span style=\"color: #008000\">1,8ms<\/span><\/strong>.<\/li>\n<\/ol>\n<p><\/p><\/div>\n        <\/div>\n        <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Korrutist R\u00b7C nimetatakse RC-ahela ajateguriks. Ajategur n\u00e4itab kondensaatori laadumise v\u00f5i t\u00fchjenemise kiirust. Mugav on see, et ajategur s\u00f5ltub nii kondensaatori mahtuvusest kui takisti takistusest. Sobiva ajateguri saamiseks v\u00f5ib muuta \u00fcksk\u00f5ik kumba \u2013 kondensaatorit v\u00f5i takistit. Seep\u00e4rast on palju variante iga &#8230;<\/p>\n","protected":false},"author":93,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-76","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/pages\/76","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/users\/93"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/comments?post=76"}],"version-history":[{"count":1,"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/pages\/76\/revisions"}],"predecessor-version":[{"id":199,"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/pages\/76\/revisions\/199"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/elektroonika\/wp-json\/wp\/v2\/media?parent=76"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}